模式1
function Person(firstName, lastName) {
var firstName = firstName;
var lastName = lastName;
this.fullName = function () {
return firstName + ' ' + lastName;
};
this.changeFirstName = function (name) {
firstName = name;
};
};
var jordan = new Person('Jordan', 'Parmer');
模式2
function person (firstName, lastName) {
return {
fullName: function () {
return firstName + ' ' + lastName;
},
changeFirstName: function (name) {
firstName = name;
}
};
};
var jordan = person('Jordan', 'Parmer');
模式3
var person_factory = (function () {
var firstName = '';
var lastName = '';
var module = function() {
return {
set_firstName: function (name) {
firstName = name;
},
set_lastName: function (name) {
lastName = name;
},
fullName: function () {
return firstName + ' ' + lastName;
}
};
};
return module;
})();
var jordan = person_factory();
据我所知,JavaScript社区普遍认为模式3是最佳选择。它与前两种模式有何不同?在我看来,这三种模式都可以用来封装变量和函数。
注意:这篇文章实际上并没有回答问题,我认为它不是重复的。